CAFRIMULGI 



241 



ectethmoids are continued on to the quadrato-jugal bar by a 

 distinct ossified ox nin-inatum, as in Todus, Scythrops, 

 Musophagida?, Piaya cay ana, Cariama, and Procellariidae. 

 The relations between the procoracoid and the clavicle vary 

 somewhat. In Podargus the process is large and reaches 



FIG. 122. STERNUM 

 OF Caprimiilr/us 

 (AFTER SCLATER). 



Fra. 123. STERNUM OF 

 Podargus (AFTER 

 SCLATER). 



FIG. 124. STERNUM 

 OF Nyctibius (AFTER 

 SCLATER). 



the clavicle ; it is small and does not in Steatornis and 

 Caprimulgus. 



The number of cervical vertebra varies from thirteen 

 (Cliordeiles) to fifteen (Steatornis). PARKER has commented 

 upon the fact that in Steatornis the atlas, instead of being, 

 as is the rule among birds presumably allied to it, perforated 

 below for the reception of the odontoid process, is merely 

 deeply notched for the same. In Steatornis the dorsal 

 vertebra3 are opisthoccelous, as among the parrots alone 

 among probable allies. It is the rule among the Caprimulgi 

 for four ribs to reach the sternum. The sternum itself is 

 one-notched on each side in Steatornis, &c. It has four 

 foramina in zEgotlieles, and is doubly notched on each side 



R 



